Using EEVEE for interactive VR presentations?
https://godotengine.org/

I think you might be better served using Blender to prepare your assets, but then use Godot Engine for the actual deployment.

Here's a recent video with a bunch of games showcasing Godot's power and versatility:
https://www.youtube.com/watch?v=UTAeDoRIHaA

Here's a video of Godot 3 new features:
https://www.youtube.com/watch?v=XptlVErsL-o

Godot is an open-source, modern, PBR-based Game Engine that can export executables for all major desktop and mobile operating systems, and also for HTML5. It also has a nice audio engine so you could add 3D audio with reverb zones etc. to increase the immersion of your presentation.

You could prepare your interactive demonstration, and host it on a website and let the client view it on-line or deliver an elegant Windows/OS X/Linux executable.

Godot has all the great features of a modern rendering engine you'd find in Eevee, but is a bit more robust on that front and it have been used to build quite a lot of games at this point. The PBR engine is a relatively new addition but seems to be working very well.

Godot works very nice with Blender-made assets. You can use COLLADA to export your models from Blender and Godot will automatically reload them once you re-export an updated version from Blender. I've even read somewhere it's possible to export PBR materials with textures in COLLADA from Blender right into Godot - haven't tested that too well myself though.

Godot also provides an improved COLLADA exporter for Blender.